Free points guys get them noww

Astructural difference between the trachea and esophagus that prevents the trachea from collapsing is the presence of: a) smooth muscle b) skeletal muscle c) respiratory cilia d) rings of cartilage

Whic disease reduces bone density and causes the bones to become brittle

Match these items. 1. the ability to evaluate information to judge whether it is true or not consequence 2. the result of a decision made or an action taken discernment